Update Triple RDF - Jena

Question

Hello,
I would like to know if it's possible to update RDF triples stored in database using Jena or by an other way?
More precisely, in one hand, I would like to load an owl file with Jena and edit some individuals (create, delete, edit properties, etc...). Then save the results in a new OWL file. But how could these modifications can be reflected in my RDF triple table?
One way would be to store only owl files instead of RDF triples and save a new copy of the owl file or erase the previous one but I'm absolutely not satisfied about that. Indeed, if you erase only one individual (an entity), you have to load the entire file, do your update and then save again.
It would be nice, if anyone can help me.
Olivier

Answer 1

Thanks a lot for your very helpful answer.
I tried Jena Adaptor 2.0 with Oracle Enterprise Edition 11g release 1 and the first example in the jena adaptor readme file:
Oracle oracle = new Oracle(szJdbcURL, szUser, szPass);
Model model = ModelOracleSem.createOracleSemModel(oracle, szModelName);
model.getGraph().add(Triple.create(
Node.createURI("http://example.com/John"),
Node.createURI("http://example.com/fatherOf"),
Node.createURI("http://example.com/Mary")));
model.close();
oracle.dispose();
I'm using Jena 2.5.6 which is highly recommanded to work with Jena Adaptor 2.0. However, this code results in a NoClassDefFoundError:
Exception in thread "main" java.lang.NoClassDefFoundError: com/hp/hpl/jena/sparql/engine/main/OpExecutor
When I looked into the arq.jar library where this class should be, I didn't find it in version 2.5.6 of Jena but in version 2.5.7 or higher.
So when I replaced the arq.jar containing the OpExecutor class, the code is correctly executed.
Do you know anything about that?
Hope to read you again
Thanks